• Newsflash as RSS feed reader
• Eloquent for
• Gradia
• Apostrophe: minimalist markdown text-editor
• Foliate: epub reader
• Geary: email client
• Gapless: music reader
• Podcast

and more: Tuba to browse the feviverse, Kooha to record the screeen, Pitivi to edit videos, Shortwave to listen to radios, Pipeline to watch Youtube videos.